Question about 2002 Yamaha TT-R 125

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Idle problems sup guys, im having problems with my TTr-125 LE 2007 could one of you tell me where the idle screw is? its probably on the carb but idk exactly where, i know where the air screw is but nothin else

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The idle set screw located left side center of the carburetor brass slotted screw

Posted on Jun 02, 2010


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Yamaha AG 200 1970

bad electrics maybe? how good does it idle? you clip on you cut off valve / slide in your carb may have the clip set one or two notches too low. or it could be a blown crank seal, does it smoke badly?

Aug 23, 2015 | 2007 Yamaha TTR 125 LE

1 Answer

Ttr carb

Hi, Anonymous every carburetor has an idle adjustment yours is on the left-hand side check the parts fiche it's #8 in the carb section for this scenario you will need your service/owners manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $ you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Jul 10, 2013 | 2002 Yamaha TT-R 125 L

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2002 yamaha ttr 225 idles high when let off gas but eventually idles down on its own and hard to start when cold with choke or without

Hi, David and the usual suspects are:
1. Throttle cables improperly adjusted, pinched or need lubrication.
2. Idle adjusting screw needs to be backed off.
4. Air fuel mixture adjusted too lean start with 2 full turns.
5. Intake system air leak.
6. Fast idle choke ramp is not releasing.
7. Broken throttle return spring.
8. Damaged diaphragm or slide.
9. Faulty MAP, TPS, ATS, O2, sensors or wiring/connector
10. Multi carburetors not in sync.
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Jun 21, 2011 | 2002 Yamaha TT-R 225

1 Answer

I have a Yamaha ttr 125 lev. I just bought a new carb for it and it runs great but it will not idle. I let it warm up for about ten minutes and then rode it for another thirty minutes and it still will not...

The idle screw is just that, the idle screw, if the low speed jet is not delivering fuel, it won't run. You should have preset the jets before installing the carb. There should be 2 or 3 jets inside, they have to be set before installing, the low speed jet is turned in all the way, then backed out 1 1/2 turns, this should be a good enough flow for all purpose, if you need more, you will have to reset the thing. Some jets are not adj. They get screwed in all the way and run on their opening dim. Which is tiny. If it is clogged in any way, you will have problems. If you have the old carb handy, you can operate on it and see what is what. Before you tear into the new one. One more thing to check is the air filter and the air flow itself, if the filter is clean, cover the intake with a piece of paper just to see if anything changes. You might have upset the flow with a different carb and there is no computer telling it what to do. Check it out, Hope this helps.

Feb 21, 2011 | 2005 Yamaha TT-R 125 LE

2 Answers

How can i start my 2006 yamaha 125 ttr after not running it for over a year?

Drain out old fuel.put in fresh fuel. Take out spark plug put in little gas and put spark plug back in. try to start.

Jul 26, 2010 | 2005 Yamaha TT-R 125 LE

1 Answer

I need the factory setting for ttr 125 2005 carb

Hi, Yeo1 for this scenario you will need your service/owners/ manual if you can't find the first and best tool you ever bought for your Yamaha, despair not, for a mere zero $ you can download another one. For more information about your issue and valuable "FREE" downloads that you will need please click on the links below. Good luck and have a nice day.
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Dirt Rider Magazine
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Mar 07, 2010 | 2005 Yamaha TT-R 125 L

1 Answer

How do I adjust my carb on 2005 ttr 125

First of all, assuming that the float level is correctly set, while running the engine at idle, turn the idle adjust screw in until it starts to get rough(pay close attention). Then back the screw out 1/8- 1/4 turn. If the screw has been removed, always start by tightening the screw all the way in and then back it out 2 1/2 turns.

Dec 02, 2009 | 2005 Yamaha TT-R 125 L

1 Answer

2007 ttr 125 wont start unless hand is over the back of carb. also wont idle.At mid and high range it runs fine. There are no air leaks and no adjustment screw for the air/idle just a factory plug.

Time for carb cleaning, blow the jets with compressed air and check the fuel level in the float chamber, adjust if necessary.
Tht factory plug is where the air-mixture screw is and tht plug has been kept there for non tampering!
That screw is factory set.
Basically its the primary jet which is a problem in your bike's carb, but all in all might as well blow both of them.
Hope this helps!

Nov 13, 2009 | 2002 Yamaha TT-R 125 L

6 Answers

Yamaha TTR 125 L won't idle

this is very tipical. when bikes are stored the fuel varishes up the jets & needles. soak the carb. moving it back and forth in the soak solution. then blow every jet and orfice with a controlled air source. note: any speck of rust or dirt can plug these jets. pay attention to detail and do every thing twice. then install the carb and adjust it to your riding style. later Spike

Nov 26, 2008 | 2004 Yamaha TT-R 125 L

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